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neutron definition

neu·tron (no̵̅o̅′trän′, nyo̵̅o̅′-)

noun

Particle Physics an uncharged nucleon having a mass of c. 1.675×10 kg (c. 939.5729 MeV/c, c. 1,839 times the mass of an electron): a free neutron, as in nuclear fission, has a half-life of c. 14.8 minutes, is readily absorbed by a nucleus, and decays into a proton, an electron, and a neutrino

Etymology: neutr(al) + -on

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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